Toothbrush



FIG. 1 is a right elevation view of a toothbrush showing my new design,the opposite side being a mirror image of the side shown;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an isometric view thereof.

The broken-line feature shown within the handle in FIG. 6 forms no partof the claimed design.

The ornamental design for a toothbrush, as shown and described.